†subfamily Cystothalamiinae Girty 1908 (demosponge)
Demospongea - Vaceletida - Sebargasiidae
Parent taxon: Sebargasiidae according to B. Senowbari-Daryan et al. 2007
Sister taxa: Amblysiphonelloides, Calabrisiphonella, Chinaspongia, Crymocoelia, Minisiphonella, Paramblysiphonella, Polycystocoelia, Pseudoamblysiphonella, Pseudoguadalupia, Sebargasiinae, Tetraproctosia, Vesicotubularia
Subtaxa: Discosiphonella
Ecology: stationary epifaunal suspension feeder